Exhaust

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

Spark arrestor screen insert included 94dB insert included For closed course competition use only. MUFFLER S/S ALUM FACTORY 4.1 RCT CARBON CAP KX450F

Massive Power gains throughout the RPM range New RTS (Rapid Tuning System) Huge weight savings. MUFFLER ALUM FACT 4.1 CRF

The lightest mufflers available Superior power and performance - horsepower improved throughout the rpm range Feature exclusive proprietary Chamber Core technology Factory Forward Engineering centralizes mass, improves handling Made from premium quality...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber TechnologyÖ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...